Backpack



FIG. 1 is a top perspective view of a backpack;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a front view of the backpack with a left cover deployed;

FIG. 9 is a left side view thereof;

FIG. 10 is a rear view thereof;

FIG. 11 is a front view of the backpack with a right cover deployed;

FIG. 12 is a right side view thereof;

FIG. 13 is a rear view thereof;

FIG. 14 is a front view of the backpack with the right cover and the left cover deployed; and,

FIG. 15 is a rear view thereof.

The right side view of the backpack with the right cover and the left cover deployed is the same as the right side view of the backpack with the right cover deployed. The left side view of the backpack with the right cover and the left cover deployed is the same as the left side view of the backpack with the left cover deployed. 

CLAIM The ornamental design for a backpack, as shown and described. 